This is the method to obtain Special Card for free!
1. Tap the setting button
2. Scroll down until the end of the page
3. Tap the coupon button
2. Choose the HAPPY LUCKY CODE COUNTDOWN 2016
3. Type XDOUBLE8
4. Finally, tap the submit button
5. You will see your Get Special Card in the mailbox
ONLY WORKS ON WEDNESDAY, 22 DECEMBER 2015